import numpy as np
with open("students.csv","r",encoding = 'utf-8') as file:
    students_data = np.loadtxt(file,str,delimiter = ',')
students_data[1:,6]

score_max = np.max(filtered_arr)
score_max

score_min = np.min(filtered_arr)
score_min

avg = np.mean(filtered_arr)
avg


score_var = np.var(filtered_arr)
score_var


#对所有人的monthfee处理
y = students_data[1:,7].astype(np.int16)
y

